<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
          <el-breadcrumb-item :to="{path: '/home' }">首页</el-breadcrumb-item>
          <el-breadcrumb-item>用户管理</el-breadcrumb-item>
          <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图 -->
        <el-card>
          <!-- 搜索与添加区域 -->
          <el-row :gutter="20">
              <el-col :span="7">
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                   <el-button slot="append" icon="el-icon-search" @click="getUserList">
                   </el-button>
                </el-input>
              </el-col>
              <el-col :span="4">
                  <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
              </el-col>
          </el-row>

          <!-- 用户列表区域 -->
          <el-table :data="userlist" border stripe>
              <el-table-column type="index" label=#></el-table-column>
              <el-table-column label="姓名" prop="username"></el-table-column>
              <el-table-column label="邮箱" prop="email"></el-table-column>
              <el-table-column label="电话" prop="mobile"></el-table-column>
              <el-table-column label="角色" prop="role_name"></el-table-column>
              <el-table-column label="状态">
                  <template slot-scope="scope">
                      <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row )">
                      </el-switch>
                  </template>
              </el-table-column>
              <el-table-column label="操作" width="180px">
                  <template slot-scope="scope">
                      <!-- 修改按钮 -->
                      <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                      <!-- 删除按钮 -->
                      <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                      <!-- 分配角色按钮 -->
                      <el-tooltip effect="dark" content="分配角色" placement="top" :enterable='false'>
                        <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                      </el-tooltip>
                  </template>
              </el-table-column>
          </el-table>

          <!-- 分页区域 -->
          <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
          </el-pagination>
        </el-card>

        <!-- 添加用户的对话框 -->
        <el-dialog
            title="添加用户"
            :visible.sync="addDialogVisible"
            width="50%" 
            @close='addDialogClosed'>
            <!-- 内容主体 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区域 -->
            <template #footer>
                <span class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
                </span>
            </template>
        </el-dialog>

        <!-- 修改用户的对话框 -->
        <el-dialog
            title="修改用户"
            :visible.sync="editDialogVisible"
            width="50%" @close="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机号" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <template #footer>
                <span class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
                </span>
            </template>
            </el-dialog>

            <!-- 分配角色的对话框 -->
            <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
            <div>
                <p>当前的用户：{{userinfo.username}}</p>
                <p>当前的角色：{{userinfo.role_name}}</p>
                <p>分配新角色：
                    <el-select v-model="selectRoleId" placeholder="请选择">
                        <el-option
                        v-for="item in rolesList"
                        :key="item.id"
                        :label="item.roleName"
                        :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="dialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
            </el-dialog>
    </div>
</template>

<script>
export default {
    data() {
        //验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
            //验证邮箱正则
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

            if (regEmail.test(value)) {
                //合法的邮箱
                return cb()
            }

            cb(new Error('请输入正确的邮箱'))
        }
        
        //验证手机号规则
        var checkMobile = (rule, value, cb) => {
            //验证手机正则
            const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
            if(regMobile.test(value)) {
                //合法的手机号
                return cb()
            }

            cb(new Error('请输入正确的手机号'))
        }
        


        return {
            //获取用户列表的参数对象
            queryInfo:{
                query: '',
                //当前的页数
                pagenum: 1,
                //当前每页显示多少数据
                pagesize: 2
            },
            userlist: [],
            total: 0,
            //控制添加用户对话框的显示与隐藏
            addDialogVisible: false,
            //添加用户的表单数据
            addForm: {
                username: '',
                password: '',
                email: '',
                mobile: ''
            },
            //添加表单的验证规则对象
            addFormRules: {
                username: [
                    { required: true, message: '请输入用户名', trigger: 'blur'},
                    {
                        min: 3,
                        max: 10,
                        message: '用户名长度在3~10个字符之间',
                        trigger: 'blur'
                    }
                ],
                password: [
                    { required: true, message: '请输入密码', trigger: 'blur'},
                    {
                        min: 6,
                        max: 15,
                        message: '密码长度在6~15个字符之间',
                        trigger: 'blur'
                    }
                ],
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur'}, { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                    { required: true, message: '请输入手机号码', trigger: 'blur'}, { validator: checkMobile, trigger: 'blur' }

                ]
            },
            //控制修改用户对话框的显示与隐藏
            editDialogVisible: false,
            //查询到的用户信息对象
            editForm: {},
            //修改表单的验证规则对象
            editFormRules: {
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur'}, { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                    { required: true, message: '请输入手机号码', trigger: 'blur'}, { validator: checkMobile, trigger: 'blur' }

                ]
            },
            //控制分配角色对话框的显示与隐藏
            setRoleDialogVisible: false,
            //需要被分配角色的用户信息
            userinfo: {},
            //所有角色的数据列表
            rolesList: [],
            //已选中的角色Id值
            selectRoleId: ''
        }
    },
    created() {
        this.getUserList()
    },
    methods: {
        async getUserList() {
            const {data: res} = await this.$http.get('users',{ params : this.queryInfo })
            if(res.meta.status !== 200) { 
                return this.$message.error('获取用户列表失败!')
            }
            this.userlist = res.data.users
            this.total = res.data.total
            console.log(res)
        },
        //监听pagesize改变的事件
        handleSizeChange(newSize){
            // console.log(newSize)
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        //监听页码值改变事件
        handleCurrentChange(newPage){
            // console.log(newPage)
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        //监听switch开关状态改变
        async userStateChanged(userinfo){
            console.log(userinfo)
            const {data:res} = await this.$http.put('users/${userinfo.id}/:uId/state/${userinfo.mg_state}')
            if(res.meta.status == 200){
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error('更新用户状态失败!')
            }
            this.$message.success('更新用户状态成功!')
        },
        //监听关闭用户对话框的关闭事件
        addDialogClosed() {
            this.$refs.addFormRef.resetFields()
        },
        //点击按钮添加新用户
        addUser() {
            this.$refs.addFormRef.validate(async valid =>{
                if(!valid) return
                //可以发起添加用户的网络请求
                const {data: res} = await this.$http.post('users', this.addForm)

                if(res.meta.status !== 201) {
                    this.$message.error('添加用户失败! ')
                }

                this.$message.success('添加用户成功! ')
                //隐藏添加用户的对话框
                this.addDialogVisible = false
                //重新获取用户列表
                this.getUserList()
            })
        },
        //展示编辑用户的对话框
        async showEditDialog(id) {
            //console.log(id)
            const {data: res} = await this.$http.get('users/' + id)
            if(res.meta.status !== 200) { 
                return this.$message.error('查询用户信息失败!')
            }

            this.editForm = res.data
            this.editDialogVisible = true
        },
        //监听修改用户对话框的关闭事件
        editDialogClosed() {
            this.$refs.editFormRef.resetFields()
        },
        //修改用户信息并提交
        editUserInfo() {
            this.$refs.editFormRef.validate(async valid => {
                if(!valid) return
                //发起修改用户信息的数据请求
                const {data: res} = await this.$http.put('users/' + this.editForm.id, {
                    email: this.editForm.email, 
                    mobile: this.editForm.mobile
                })

                if(res.meta.status !== 200) { 
                return this.$message.error('更新用户信息失败!')
            }

            //关闭对话框
            this.editDialogVisible = false
            //刷新数据列表
            this.getUserList()
            //提示修改成功
            this.$message.success('更新用户信息成功!')
            })
        },
        //根据id删除对应的用户信息
        async removeUserById(id) {
            //弹框提示删除
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning',
            }
          ).catch(err => err)

          //   如果用户点确定，为字符串confirm
          //   如果用户点取消，为字符串cancle
            console.log(confirmResult)
          if (confirmResult !== 'confirm') {
              return this.$message.info('已取消删除')
           }

          const {data: res} = await this.$http.delete('users/' + id)
          if (res.meta.status !== 200) {
              return this.$message.error('删除失败!')
            }

            this.$message.success('删除成功!')
            this.getUserList()
          
        },
        //展示分配角色的对话框
        async setRole(userinfo) {
            this.userinfo = userinfo

            //在展示对话框之前，获取所有角色列表
            const {data: res} = await this.$http.get('roles')
            if(res.meta.status !== 200) { 
                return this.$message.error('获取角色列表失败!')
            }

            this.rolesList = res.data

            this.setRoleDialogVisible = true
        },
        //点确定分配角色
        async saveRoleInfo() {
            if(!this.selectRoleId){
            return this.$message.error('请选择要分配的角色!')
          }

        const {data:res} = await this.$http.put(`users/${this.userinfo.id}/role`, {rid: this.selectRoleId})

        if(res.meta.status !== 200) {
            return this.$message.error('更新角色失败! ')
            }
        
        this.$message.success('更新角色成功！')
        this.getUserList()
        this.setRoleDialogVisible = false
        },
        //监听分配角色对话框的关闭事件
        setRoleDialogClosed() {
            this.selectRoleId = ''
            this.userinfo = {}
        }
    }
}
</script>

<style lang="less" scoped>
</style>